Errbit - The open source error catcher that's Airbrake API compliant
Open PostgreSQL Monitoring - Oversee and Manage Your PostgreSQL Servers
SQLAlchemy - SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.
SqlPad - Run SQL in your browser and chart the results
Redsmin - All-in-One GUI for Redis. Thightly crafted developer oriented, online real-time monitoring and administration service for Redis.
Sequelize - Provides access to a MySQL database by mapping database entries to objects and vice-versa.